I have purchased RD6600, but I found that the display of contact names are not convenient . In bluetooth option also everytime we have to select headset option when ever there is a incoming call. It should automatically transfer the call to the headset. One more disadvantage is call off button. So far we have been using the call off button on front side. Now in RD6600 it is given near the camera button.
The disadvantage is some time when there is delay in off, the call charges will be more. I think reliance people got it ordered like this for their financial benefit.My suggestion is immediatly recall the product from the market in the interest of customers. or else there should be moditfication of call button. In contacts also the display should be wider. They have given some images near the contacts and it is not any useful for the customer